IJOEP : International Journal of Ecophysiology
International Journal of Ecophysiology (IJOEP) is a peer-reviewed biannual journal (February and July) published by TALENTA Publisher and organized by Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara (USU) as an open-access journal. It welcomes full research articles in the field of Biological Sciences from the following subject area: Anatomy, Comparative anatomy, Histology, Astrobiology, Biochemistry, Biological engineering, Biogeography, Bioinformatics, Biolinguistics, Biomechanics, Biomedical research, Biophysics, Biotechnology, Synthetic biology, Botany, Phycology, Plant physiology, Cell biology, Chronobiology, Cognitive biology, Conservation biology, Cryobiology, Developmental biology, Embryology, Gerontology, Ecology, Evolutionary biology, Genetics, Genomics, Epigenetics, Immunology, Marine biology, Microbiology, Bacteriology, Mycology, Parasitology, Virology, Molecular biology, Nanobiology, Neuroscience, Paleontology, Pathobiology, Pharmacology, Physiology, Phytopathology, Psychobiology, Quantum biology, Systems biology, Structural biology, Theoretical biology, Zoology, Ethology, Entomology, Herpetology, Ichthyology, Mammalogy, and Ornithology. Each publication will contain 10 (ten) manuscripts.
Articles
114 Documents
<![CDATA[The Diversity of Postharvest Fungi on Sidempuan Salak (Salacca Sumatrana Becc.) ]]>
<![CDATA[Kiki Nurtjahtja]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11164
<![CDATA[Salak fruit in Indonesia was produced by various cultivated varieties, one of which is sidempuan salak (Salacca sumatrana). Post-harvest destroying fungi is one of the most causes yield losses on sidempuan salak. The purpose of this study was to enumerate and the pathogenicity of postharvest destroying fungi on postharvest sidempuan salak. As many as 1000 g of fresh harvested of salak fruit was used as sample. Fungal population was enumerated by dilution method followed by pour plate method. The intensity of infection each of fungal species was determined. The results showed that there were five species of postharvest fungi that caused spoilage to sidempuan salak fruit i.e., Penicillium citrinum, mycelia sterilia, Aspergillus sp. A. niger and Penicillium. sp. Among of the fungi A. niger was the highest population (7.0×107 CFU/g) and the most predominant with intensity of infection was 100%.]]>
<![CDATA[Retardan Variation of Paclobutrazol in VW (Vacin & Went) Media Towards the Artificial seeds Viability of the Dendrobium sp. ]]>
<![CDATA[Elimasni]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11165
<![CDATA[The research of the variation of paclobutrazol retardant in VW (Vacin & Went) media toward the viability of artificial seeds of Dendrobium sp. had been carried out at the Laboratory of Physiology and Plant Tissue Culture, Department of Biology, Faculty of Mathematics and Natural Sciences, University of North Sumatra, Medan. The purpose of the study was to obtain the best combination of paclobutrazol treatments and the storage time on the viability of artificial seeds of Dendrobium sp. This study used a factorial completely randomized design by two factors, which were six levels of paclobutrazol 0; 1; 2; 3; 4; 5 ppm, and 2 levels of storage duration times (0; 2; 4 weeks). The statistical analysis of the data showed that the combination of paclobutrazol treatments and storage times significantly affected the growth time of plb Dendrobium sp. as well as the wet weight and the dry weight (P < 0.05). Paclobutrazol concentration of 4 ppm and storage period of 4 weeks (P4L2) gave the best effect in delaying the growth of synthetic seeds of Dendrobium sp. with an average growth of 21.6 days. The 2 ppm treatment of paclobutrazol and the 4 weeks storage time (P2L2) gave the highest wet weight and dry weight by an average of 0.198 grams and 0.007760 grams, respectively.]]>
<![CDATA[The Antimicrobe of Kaempferia galanga L. Rhizome against Microsporum canis and Staphylococcus epidermidis – In-vitro Study ]]>
<![CDATA[Kiki Nurtjahtja]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11167
<![CDATA[This study aims to determine the ability of ethanolic extract of Kaempferia galanga L. rhizome in inhibiting the growth of Microsporum canis and Staphylococcus epidermidis. Rhizome concentrations used were 40, 50, 60, and 70%. Each treatment was replicate 4 times. Results showed that extract of K. galanga rhizome up to 70% have not significantly differences against M. canis and S. epidermidis. Rhizome extract of 70% inhibit the growth of M. canis with the highest inhibition 5.88 mm (in compared to ketoconazole 10.35 mm). Whereas the extract of 70% inhibit S. epidermidis with the highest inhibition 3.16 mm (in compared to chloramphenicol 25.49 mm).]]>
<![CDATA[Utilization Of Lime Peel Waste (Citrus aurantifolia (Christm.) Swingle) As An Antibacterial Against Salmonella typhi ]]>
<![CDATA[Helen Anjelina Simanjuntak]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11173
<![CDATA[Typhoid fever is a digestive tract infection caused by Salmonella typhi. Treatment of typhoid fever can use natural ingredients such as lime peel waste. The purpose of this study was to determine the effect of the ethanol extract of lime peel waste on the growth of Salmonella typhi bacteria. The extraction method used the maceration technique, and the antibacterial activity test used the paper disc diffusion method. The results showed that the ethanol extract of lime peel waste at concentrations of 1 mg/ml, 3 mg/ml, 5 mg/ml and 7 mg/ml with inhibition zone diameters of 4.66 mm, 6.55 mm, 9.29 mm and 10.06 mm. The conclusion shows that there is an effect of lime peel ethanol extract in inhibiting the growth of Salmonella typhi bacteria in the weak to strong category.]]>
<![CDATA[Ethnobotany of the Vile Shard Plant (strobilanthes crispa (L) blume) As a Cure for Diabetes in the People of the Nias Islands ]]>
<![CDATA[Etti Sartina Siregar]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11174
<![CDATA[The use of medicinal plants by the Indonesian people has been carried out for a long time from generation to generation to cure certain diseases, one of which is the people of the Nias Islands who use the vile shard leaves ( Strobilanthes crispa (L. ) (Blume) as a drug to reduce urinary complaints, kidney stones, gallstones and diabetes. Keji shard leaves are known to have high antioxidant compounds, namely flavonoids which can be used as medicinal compounds to treat diabetes, hypertension and inhibit the growth of pathogenic bacteria such as Escherichia coli, Staphylococcus aureus and Streptococcus pyogenes]]>
<![CDATA[Macrofungi Diversity in Mount Pandan Ectourism Area, Aceh Tamiang ]]>
<![CDATA[Juli Trianda Sri Rejeki]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 1 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i1.11175
<![CDATA[Macrofungi are fungi that can be seen with the naked eye. Its characteristics can be seen based on its structure and body shape. Generally, fungi live in various types of habitats, namely wood, soil, litter, animal waste and so on. This research was conducted on 8-9 June 2022 in the Ecotourism area of Gunung Pandan, Aceh Tamiang Regency, Aceh Province. Determining the sampling point was carried out by the path method by observing macroscopic fungi along the hiking trail at a distance of 10 meters to the right and 10 meters. The most numerous macroscopic fungi, living solitary and these fungi were found in the Basidiomycota division, with 11 species and the least in the Thallophyta division, Eumycetes class, with 1 species.]]>
<![CDATA[Effect of Incubation Time on Amylase Enzyme Activity in Cassava Tape ]]>
<![CDATA[Yurnaliza]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 2 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i2.11377
<![CDATA[Cassava tape is a product made by a fermentation process that requires the help of microorganisms. The tape fermentation process involves the enzyme amylase. Amylase is a glycoside hydrolase enzyme that catalyzes the breakdown of starch into simple sugars. Enzyme activity can be calculated by measuring the amount of product formed, or by calculating the amount of substrate reduction in a given unit of time. This study aims to determine the effect of incubation time on amylase enzyme activity in cassava tape. The research method used was the descriptive experimental method. The results of the experiment showed a reduction in the substrate due to amylase enzyme activity. The highest percentage of substrate reduction occurred at 48 hours incubation time and the lowest percentage at 144 hours incubation time. An organoleptic test was conducted with color, aroma, texture, and taste parameters conducted on 30 panelists. Incubation time affected the percentage of substrate reduction and organoleptic parameters]]>
<![CDATA[Sleep Late Impact on The Salivary pH Levels and Amylase Activity among Male Students who has Different BMI Category ]]>
<![CDATA[Yurnaliza]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 2 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i2.11379
<![CDATA[The lack of sleep could damage the circadian rhythm, which has implications for health issues. Here we conduct a survey on Students from the Faculty of Social and Political using purposive random sampling, by targeting student who has sleep duration low than 8 hours. We are using a questionnaire to gain information about the sleeping duration and also the Body Mass Index (BMI). Moreover, we also collect saliva samples from the students. pH Universal Indicators are used to measure the pH levels of saliva. We predict the salivary amylase activity by measuring the decrease of the substrate. We found about 27 students have a sleep duration of fewer than 6 hours. Then 19 students have a sleep duration of about 8 - 6 hours. Finally, only 5 students have a sleep duration of more than 8 hours. Our study suggests there is no significant difference between the 3 categories of sleep duration on saliva pH levels and salivary amylase activity. The same for the BMI categories. Although there are small differences sleep duration and BMI is not the major factor influencing the pH levels and amylase activity in saliva]]>
<![CDATA[Does Chitala Lopis Really Extinct? An Overview And DNA Barcode (COI) Comparison ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 2 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i2.11388
<![CDATA[The Asian Featherback Fish Or Ikan Belida Is One Of The Most Important Species Of Fish In Indonesia That Is Utilised By Locals As A Food Ingredient. Unfortunately, One Of The Species (Chitala Lopis) Has Already Been Reported Extinct By The IUCN. Nevertheless, Many Publications After That Still Claimed That Chitala Lopis Is Extant. We Study 28 COI Partial Sequences Of Chitala Lopis From NCBI. The Result Showed That Most Of These Sequences Were Not The Actual Chitala Lopis. It Is Probably Either Chitala Hypselonotus Or Chitala Borneensis. This Prediction Is Based On The Unmatch Between The Distribution Of Chitala Lopis COI Sample Origin And The Actual Habitat Of Chitala Lopis, Which Is Endemic To Java Island. However, There Is Also An Article That Reports If Chitala Lopis Is Tried To Be Cultivated. The Misinterpretation Is Perhaps Because Chitala Spp. Is A Complex Species, Which Has Very Similar Morphology. More Study On Molecular Chitala Sp. In Indonesia Is Still Needed To Complete The Unclear Status Of Extinct Chitala Lopis]]>
<![CDATA[Oral Squamous Cell Carcinoma: The Molecular Characteristics ]]>
<![CDATA[Syafruddin Ilyas]]>
<![CDATA[ International Journal of Ecophysiology Vol. 4 No. 2 (2022): International Journal of Ecophysiology ]]>
Publisher : <![CDATA[Talenta Publisher ]]>
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DOI: 10.32734/ijoep.v4i2.11389
<![CDATA[Oral squamous cell carcinoma (OSCC) is a malignancy that occurs on keratinocyte cells that have the potential to spread through lymphatic tissue or blood vessels. These carcinomas develop as a result of a series of molecular factors, which are influenced by individual genetic factors as well as environmental exposure to carcinogens. The evaluation of the prognosis and treatment plan for OSCC are mainly based on the clinical picture of the tumor or the TNM classification (T, tumor; N, lymph nodes or glands; M, metastases). The disadvantage of this diagnostic technique is that it does not consider the biological properties of the tumor, molecular characteristics, or tumor location, so it is deemed incapable of predicting patient safety. The purpose of this paper is to provide an overview of the etiology, pathogenesis, clinical picture, radiographic findings, and histopathological features of OSCC to help those concerned make the correct diagnosis. We use references from the last ten years article to obtain an up-to-date data. Based on our literacy study, we discovered that the presence of pseudoepitheliomatous hyperplasia (PEH) and keratoacanthoma distinguishes OSCC from many other oral cavity carcinomas (CA). The amount of P53 expression in tissues experiencing PEH and CA, as well as the integration of several other pro-cancer protein expressions, can be used to detect severity early. We can conclude that early detection of OSCC should be done by assessing the expression of proteins that cause the severity of cancerous lesions so that suppression of these cancer-inducing proteins can be treated while the levels are still low]]>
